yonghui_mings=['admin','jhon','mike','allce','son']
for yonghui_ming in  yonghui_mings:
 if yonghui_ming == 'admin':
    print("Hello admin, would you liketo seeastatus report?")
 if yonghui_ming == ' ':
     print("We need to find some users!")
 else:
     print("Hello Eric, thank you for logging in again!")
current_users=['admin','jhon','mike','allce','son']
new_users=['jhon','mike','mack','nake','guir']
one_name = 'jhon'
if one_name in new_users:
    print("需要输入别的用户名")
else:
    print("这个用户名未被使用")
two_name = 'mike'
if two_name in new_users:
    print("需要输入别的用户名")
else:
    print("这个用户名未被使用")
three_name = 'mack'
if three_name in new_users:
    print("需要输入别的用户名")
else:
    print("这个用户名未被使用")
four_name = 'nake'
if four_name in new_users:
    print("需要输入别的用户名")
else:
    print("这个用户名未被使用")
five_name = 'guir'
if five_name in new_users:
    print("需要输入别的用户名")
else:
    print("这个用户名未被使用")
numbers=[1,2,3,4,5,6,7,8,9]
for number in numbers:
    print(number)
number = (1,2,3,4,5,6,7,8,9)
for no in number:
    if no == 1:
       print("1st")
    elif no == 2:
        print("2nd")
    elif no == 3:
        print("3rd")
    elif no == 4:
        print("4th")
    elif no == 5:
        print("5th")
    elif no == 6:
        print("6th")
    elif no == 7:
        print("7th")
    elif no == 8:
        print("8th")
    else:
        print("9th")
